The coin in question is the 1966 round 50 cent coin, which the Aussie initially confused for a 20 cent piece when they received it as change. “Found this in my change. I never knew there used to be ...

While they are worth much less, if you come across a round 50 cent coin they can also be worth $15 due to their silver value. The circular coins were first introduced on February 14, 1966 and are made ...

and originally mistook it as a regular 20 cent coin. “I never knew there used to be round 50 cent coins,” they wrote in the post, alongside an image of the coin. The finder originally mistook ...